Invoice
When this option is selected the unsettled invoices will display a total outstanding amount per invoice.
Invoice Line
When this option is selected the unsettled invoices will display a total outstanding amount per invoice line.
Invoice Line Link
This is the default option. When this option is selected then the unsettled invoices will display a total outstanding amount per invoice line link. It is necessary to select this option if a partial settlement on an invoice line link needs to be made.